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  1. Twin Diamond File

Niwaki Twin Diamond File

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Double sided diamond file for coarse sharpening and re-setting old blades. This is what we use when you send in battered old shears and secateurs with nicked and chipped blades - the #120 side eats through the steel to a new edge, then the #300 gives a crude finish before moving over to a whetstone to get a decent edge. Use dry. Indispensable.

Tips

    Essential for fixing damaged blades, but also useful for sharpening rough edges like mower blades.

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    $26.00

    Delivering to US (Paying in USD) Edit

    Niwaki Twin Diamond FileFree delivery for orders over $100.00*Add to Wishlist / Save for later
    Niwaki Twin Diamond File
    • 50g
    • 217 x 18 x 5mm
    • Electroplated Diamond
    • Made in Japan
    • In Stock - Available to dispatch worldwide, contact us for showroom stock availability
    Delivery

    UK: (excluding Tripod Ladders)

    • Free delivery for orders over £100*
    • £4.00: Royal Mail tracked service - delivered by the postie, can be left in safe place, limited tracking info. Approx 2-5 working days.
    • £7.50: DHL, FedEx, or UPS tracked service typically delivered next working day by 6pm (excluding Sat/Sun and UK Bank Holidays) for orders received before 12pm GMT Mon–Fri (excluding UK Bank Holidays).

    Global: (excluding Tripod Ladders)

    • Free delivery for orders over £/$/€100*
    • Price depends on location - adjust the COUNTRY tab in your basket to see the price.
    • We use DHL, FedEx, or UPS, and we’ll email you the tracking info.

    *Customs fees may apply and are estimated during checkout. Surcharges may apply to some larger or heavier items to some areas.
    * Please note Niwaki are not responsible for any import duty, taxes or fees incurred and these will be will be collected by our courier during customs clearance — For EU countries, when possible DHL will provide an estimate on the order confirmation page.

    Caring For Your Tools

    Most of our sharp tools are made from carbon steel - this means they will, through regular use, stain (and eventually rust) and gradually lose their edge. Caring for them involves three things…

    1. Correct Use:

    • Japanese steel is hard and sharp, and can be more brittle than some people are used to - it will chip if abused
    • Do not cut wire, metal, stone, plastic or any other hard material (even bamboo fibres and some very hard woods, especially knots and burrs, can damage steel edges)
    • Do not twist or apply uneven pressure
    • Cut diagonally across branches (not straight across) so you cut along the fibres
    • Pay attention to our maximum cut dimensions, and don’t overdo it (shears are not loppers)
    • Use the base of the blades, not the tips, for heavier cuts

    2. Keeping Them Clean:

    • Remove leaf resin, rust and gunk with a Crean Mate and water
    • Dry, wipe over with Camellia oil and store in a dry place

    3. Keeping Them Sharp:

    New tools won’t need sharpening for some time, but after a while you’ll notice them gradually lose their edge, especially if you’re box clipping (you need REALLY sharp blades to get a good finish with box). Use the Niwaki Sharpening Stones for best results (#1000 grit is best for general sharpening).

    • Sharpen Secateurs every couple of weeks
    • Sharpen Shears and Topiary Clippers EVERY TIME you use them - the difference is amazing
    Sharpening
    This is what we use when you send in battered old shears and secateurs with nicked and chipped blades
    Niwaki Twin Diamond File
    Essentials